Smoke

cabbott · 09-25-2008, 08:40 PM

My 85 N/A starts and runs fine. My friends say at WOT it kinda puffs smoke. What could cause this? I think i have a leaky exhaust manifold gasket could this cause a rich or lean comdition or some other kind of smoke?

Maticuno · 09-25-2008, 11:01 PM

What color is the smoke? Black smoke would be a rich condition. White smoke would be burning oil caused by leaking valve seals or worn piston rings. How many miles does your car have?

Teado · 09-26-2008, 11:34 AM

Many times WOT is the breeding ground for blown head gaskets to show their face.

I have a BHG on my 86, but only see white smoke (burning coolant) near WOT due to the higher compression

typically,

black = burning oil
white = burning coolant

sickof5sfe · 09-26-2008, 12:38 PM

actaully black means excessive fuel consumption.....bluish black is burning oil.....and white is burning coolant

cabbott · 09-26-2008, 07:50 PM

131,000 miles. Well during regular driving there are no issues. But i pulled the plugs today and they had oil on them

cabbott · 09-26-2008, 10:57 PM

Would an incorrectly gapped plug make a rich condition

Maticuno · 09-26-2008, 11:25 PM

I can't imagine you having worn piston rings after only 130K miles. Valve seals may have hardened over the years though, letting some oil seep into the combustion chamber.

cabbott · 09-26-2008, 11:31 PM

So is this gonna be a bad problem now. The car was pretty well maintained and plan on taking even better care of it.

cabbott · 09-27-2008, 09:52 AM

I just used engine cleaner following the directions and now have smoke coming from the exhaust manifold side of the engine and out the exhaust so do i have a leaky exhaust manifold gasket?

Timon · 09-27-2008, 07:17 PM

"2.11 Where is that Exhaust Leak?

More than likely you have the #4 cylinder cracked manifold problem. Quite often, the exhaust manifold will crack right by the #4 cylinder, causing the exhaust leak. It could also be loose EGR bolt or a rusted out muffler. " - Credits : AW11 FAQ

cabbott · 09-28-2008, 12:01 AM

That seems to make sense. its a new muffler so i think its the manifold somewhere. Thanks.

Gairloch · 09-28-2008, 05:48 AM

Quote:

Originally Posted by cabbott

Would an incorrectly gapped plug make a rich condition

No it wont, but it will prevent ignition of the AFR mix you get into the cylinder

Rich is when there's too much fuel injected into the cylinder putting the AFR out of whack. What you're talking about is just a lack of ignition.

Ledfoot1986 · 10-02-2008, 07:00 PM

Quote:

Originally Posted by Teado

Many times WOT is the breeding ground for blown head gaskets to show their face.

I have a BHG on my 86, but only see white smoke (burning coolant) near WOT due to the higher compression

typically,

black = burning oil
white = burning coolant

What is WOT?

Lil Blue Bastard · 10-03-2008, 08:47 PM

Quote:

Originally Posted by Ledfoot1986

What is WOT?

Wide Open Throttle

09-25-2008, 08:40 PM	#1 (permalink)
cabbott No Skills Join Date: Sep 2008 Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Smoke My 85 N/A starts and runs fine. My friends say at WOT it kinda puffs smoke. What could cause this? I think i have a leaky exhaust manifold gasket could this cause a rich or lean comdition or some other kind of smoke?

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09-25-2008, 11:01 PM	#2 (permalink)
Maticuno Park Ranging Join Date: Aug 2008 Location: California Deserts Posts: 313 Thanks: 15 Thanked 25 Times in 17 Posts iTrader Rating: (2/100% )	What color is the smoke? Black smoke would be a rich condition. White smoke would be burning oil caused by leaking valve seals or worn piston rings. How many miles does your car have?

09-26-2008, 11:34 AM	#3 (permalink)
Teado MK1 = My Daily Addiction Join Date: Jun 2008 Location: Oregon Posts: 272 Thanks: 11 Thanked 9 Times in 8 Posts iTrader Rating: (2/100% )	Many times WOT is the breeding ground for blown head gaskets to show their face. I have a BHG on my 86, but only see white smoke (burning coolant) near WOT due to the higher compression typically, black = burning oil white = burning coolant

09-26-2008, 12:38 PM	#4 (permalink)
sickof5sfe doing a secret build >:D Join Date: Jul 2007 Location: Richfield Minnesota Posts: 364 Thanks: 11 Thanked 4 Times in 4 Posts iTrader Rating: (1/100% )	actaully black means excessive fuel consumption.....bluish black is burning oil.....and white is burning coolant

09-26-2008, 07:50 PM	#5 (permalink)
cabbott No Skills Join Date: Sep 2008 Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	131,000 miles. Well during regular driving there are no issues. But i pulled the plugs today and they had oil on them

09-26-2008, 10:57 PM	#6 (permalink)
cabbott No Skills Join Date: Sep 2008 Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Would an incorrectly gapped plug make a rich condition

09-26-2008, 11:25 PM	#7 (permalink)
Maticuno Park Ranging Join Date: Aug 2008 Location: California Deserts Posts: 313 Thanks: 15 Thanked 25 Times in 17 Posts iTrader Rating: (2/100% )	I can't imagine you having worn piston rings after only 130K miles. Valve seals may have hardened over the years though, letting some oil seep into the combustion chamber.

09-26-2008, 11:31 PM	#8 (permalink)
cabbott No Skills Join Date: Sep 2008 Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	So is this gonna be a bad problem now. The car was pretty well maintained and plan on taking even better care of it.

09-27-2008, 09:52 AM	#9 (permalink)
cabbott No Skills Join Date: Sep 2008 Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	I just used engine cleaner following the directions and now have smoke coming from the exhaust manifold side of the engine and out the exhaust so do i have a leaky exhaust manifold gasket?

09-27-2008, 07:17 PM	#10 (permalink)
Timon MR2 MKI AW11 Join Date: Feb 2008 Location: Utah Posts: 669 Thanks: 13 Thanked 42 Times in 37 Posts My Google Map iTrader Rating: (1/100% )	"2.11 Where is that Exhaust Leak? More than likely you have the #4 cylinder cracked manifold problem. Quite often, the exhaust manifold will crack right by the #4 cylinder, causing the exhaust leak. It could also be loose EGR bolt or a rusted out muffler. " - Credits : AW11 FAQ

09-28-2008, 12:01 AM	#11 (permalink)
cabbott No Skills Join Date: Sep 2008 Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	That seems to make sense. its a new muffler so i think its the manifold somewhere. Thanks.